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Dataset associated with "Magnetic domain texture and the Dzyaloshinskii-Moriya interaction in Pt/Co/IrMn and Pt/Co/FeMn thin films with perpendicular exchange bias"

Khan, Risalat A. and Nembach, Hans T. and Ali, Mannan and Shaw, Justin M. and Marrows, Christopher H. and Moore, Thomas A. (2018) Dataset associated with "Magnetic domain texture and the Dzyaloshinskii-Moriya interaction in Pt/Co/IrMn and Pt/Co/FeMn thin films with perpendicular exchange bias". University of Leeds. [Dataset] https://doi.org/10.5518/429

Dataset description

Antiferromagnetic materials present us with rich and exciting physics, which we can exploit to open new avenues in spintronic device applications. We explore perpendicularly magnetized exchange biased systems of Pt/Co/IrMn and Pt/Co/FeMn, where the crossover from paramagnetic to antiferromagnetic behavior in the IrMn and FeMn layers is accessed by varying the thickness. We demonstrate, through magneto-optical imaging, that the magnetic domain morphology of the ferromagnetic Co layer is influenced by the Nèel order of the antiferromagnet (AFM) layers. We relate these variations to the anisotropy energy of the AFM layer and the ferromagnet-antiferromagnet (FM-AFM) inter-layer exchange coupling. We also quantify the interfacial Dzyaloshinskii-Moriya interaction (DMI) in these systems by Brillouin light scattering spectroscopy. The DMI remains unchanged, within experimental uncertainty, for different phases of the AFM layers, which allows us to conclude that the DMI is largely insensitive to both AFM layer spin order and exchange bias. Understanding such fundamental mechanisms is crucial for the development of future devices employing chiral spin textures, such as Nèel domain walls and skyrmions, in FM-AFM heterostructures.

Keywords: Dzyaloshinskii-Moriya interaction, Antiferromagnet, Exchange bias, Magnetic domains, Spintronics
Subjects: F000 - Physical sciences > F300 - Physics
Divisions: Faculty of Mathematics and Physical Sciences > School of Physics and Astronomy
Related resources:
LocationType
https://arxiv.org/abs/1805.08483Publication
License: Creative Commons Attribution 4.0 International (CC BY 4.0)
Date deposited: 08 Aug 2018 13:42
URI: https://archive.researchdata.leeds.ac.uk/id/eprint/408

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